/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : usbd_cdc_if.c
 * @version        : v2.0_Cube
 * @brief          : Usb device for Virtual Com Port.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
 * All rights reserved.</center></h2>
 *
 * This software component is licensed by ST under Ultimate Liberty license
 * SLA0044, the "License"; You may not use this file except in compliance with
 * the License. You may obtain a copy of the License at:
 *                             www.st.com/SLA0044
 *
 ******************************************************************************
 */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "usbd_cdc_if.h"

/* USER CODE BEGIN INCLUDE */
#include "touch_driver.h"
/* USER CODE END INCLUDE */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
 * @brief Usb device library.
 * @{
 */

/** @addtogroup USBD_CDC_IF
 * @{
 */

/** @defgroup USBD_CDC_IF_Private_TypesDefinitions
 * USBD_CDC_IF_Private_TypesDefinitions
 * @brief Private types.
 * @{
 */

/* USER CODE BEGIN PRIVATE_TYPES */

/* USER CODE END PRIVATE_TYPES */

/**
 * @}
 */

/** @defgroup USBD_CDC_IF_Private_Defines USBD_CDC_IF_Private_Defines
 * @brief Private defines.
 * @{
 */

/* USER CODE BEGIN PRIVATE_DEFINES */
/* Define size for the receive and transmit buffer over CDC */
/* It's up to user to redefine and/or remove those define */
#define APP_RX_DATA_SIZE 128
#define APP_TX_DATA_SIZE 128
/* USER CODE END PRIVATE_DEFINES */

/**
 * @}
 */

/** @defgroup USBD_CDC_IF_Private_Macros USBD_CDC_IF_Private_Macros
 * @brief Private macros.
 * @{
 */

/* USER CODE BEGIN PRIVATE_MACRO */

/* USER CODE END PRIVATE_MACRO */

/**
 * @}
 */

/** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables
 * @brief Private variables.
 * @{
 */
/* Create buffer for reception and transmission           */
/* It's up to user to redefine and/or remove those define */
/** Received data over USB are stored in this buffer      */
uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];

/** Data to send over USB CDC are stored in this buffer   */
uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];

/* USER CODE BEGIN PRIVATE_VARIABLES */

/* USER CODE END PRIVATE_VARIABLES */

/**
 * @}
 */

/** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
 * @brief Public variables.
 * @{
 */

extern USBD_HandleTypeDef hUsbDeviceFS;

/* USER CODE BEGIN EXPORTED_VARIABLES */

/* USER CODE END EXPORTED_VARIABLES */

/**
 * @}
 */

/** @defgroup USBD_CDC_IF_Private_FunctionPrototypes
 * USBD_CDC_IF_Private_FunctionPrototypes
 * @brief Private functions declaration.
 * @{
 */

static int8_t CDC_Init_FS(void);
static int8_t CDC_DeInit_FS(void);
static int8_t CDC_Control_FS(uint8_t cmd, uint8_t *pbuf, uint16_t length);
static int8_t CDC_Receive_FS(uint8_t *pbuf, uint32_t *Len);

/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */

/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */

/**
 * @}
 */

USBD_CDC_ItfTypeDef USBD_Interface_fops_FS = {CDC_Init_FS, CDC_DeInit_FS,
                                              CDC_Control_FS, CDC_Receive_FS};

/* Private functions ---------------------------------------------------------*/
/**
 * @brief  Initializes the CDC media low layer over the FS USB IP
 * @retval USBD_OK if all operations are OK else USBD_FAIL
 */
static int8_t CDC_Init_FS(void) {
  /* USER CODE BEGIN 3 */
  /* Set Application Buffers */
  USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
  USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
  return (USBD_OK);
  /* USER CODE END 3 */
}

/**
 * @brief  DeInitializes the CDC media low layer
 * @retval USBD_OK if all operations are OK else USBD_FAIL
 */
static int8_t CDC_DeInit_FS(void) {
  /* USER CODE BEGIN 4 */
  return (USBD_OK);
  /* USER CODE END 4 */
}

/**
 * @brief  Manage the CDC class requests
 * @param  cmd: Command code
 * @param  pbuf: Buffer containing command data (request parameters)
 * @param  length: Number of data to be sent (in bytes)
 * @retval Result of the operation: USBD_OK if all operations are OK else
 * USBD_FAIL
 */
static int8_t CDC_Control_FS(uint8_t cmd, uint8_t *pbuf, uint16_t length) {
  /* USER CODE BEGIN 5 */
  switch (cmd) {
  case CDC_SEND_ENCAPSULATED_COMMAND:

    break;

  case CDC_GET_ENCAPSULATED_RESPONSE:

    break;

  case CDC_SET_COMM_FEATURE:

    break;

  case CDC_GET_COMM_FEATURE:

    break;

  case CDC_CLEAR_COMM_FEATURE:

    break;

    /*******************************************************************************/
    /* Line Coding Structure */
    /*-----------------------------------------------------------------------------*/
    /* Offset | Field       | Size | Value  | Description */
    /* 0      | dwDTERate   |   4  | Number |Data terminal rate, in bits per
     * second*/
    /* 4      | bCharFormat |   1  | Number | Stop bits */
    /*                                        0 - 1 Stop bit */
    /*                                        1 - 1.5 Stop bits */
    /*                                        2 - 2 Stop bits */
    /* 5      | bParityType |  1   | Number | Parity */
    /*                                        0 - None */
    /*                                        1 - Odd */
    /*                                        2 - Even */
    /*                                        3 - Mark */
    /*                                        4 - Space */
    /* 6      | bDataBits  |   1   | Number Data bits (5, 6, 7, 8 or 16). */
    /*******************************************************************************/
  case CDC_SET_LINE_CODING:

    break;

  case CDC_GET_LINE_CODING:

    break;

  case CDC_SET_CONTROL_LINE_STATE:

    break;

  case CDC_SEND_BREAK:

    break;

  default:
    break;
  }

  return (USBD_OK);
  /* USER CODE END 5 */
}

/**
 * @brief  Data received over USB OUT endpoint are sent over CDC interface
 *         through this function.
 *
 *         @note
 *         This function will block any OUT packet reception on USB endpoint
 *         untill exiting this function. If you exit this function before
 * transfer is complete on CDC interface (ie. using DMA controller) it will
 * result in receiving more data while previous ones are still not sent.
 *
 * @param  Buf: Buffer of data to be received
 * @param  Len: Number of data received (in bytes)
 * @retval Result of the operation: USBD_OK if all operations are OK else
 * USBD_FAIL
 */
static int8_t CDC_Receive_FS(uint8_t *Buf, uint32_t *Len) {
  /* USER CODE BEGIN 6 */
  /*processor callback function */
  TCH_Receive_Callback(Buf, *Len);
  USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
  USBD_CDC_ReceivePacket(&hUsbDeviceFS);
  return (USBD_OK);
  /* USER CODE END 6 */
}

/**
 * @brief  CDC_Transmit_FS
 *         Data to send over USB IN endpoint are sent over CDC interface
 *         through this function.
 *         @note
 *
 *
 * @param  Buf: Buffer of data to be sent
 * @param  Len: Number of data to be sent (in bytes)
 * @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
 */
uint8_t CDC_Transmit_FS(uint8_t *Buf, uint16_t Len) {
  uint8_t result = USBD_OK;
  /* USER CODE BEGIN 7 */
  USBD_CDC_HandleTypeDef *hcdc =
      (USBD_CDC_HandleTypeDef *)hUsbDeviceFS.pClassData;
  if (hcdc->TxState != 0) {
    return USBD_BUSY;
  }
  USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
  result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
  /* USER CODE END 7 */
  return result;
}

/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */

/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */

/**
 * @}
 */

/**
 * @}
 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
